Dogs are a man's best friend, and research released on Wednesday says canines want to keep it that way.
Dogs are capable of feeling a basic form of jealousy, according to a study published in the PLOS ONE scientific journal.
The research, said to be the first experiment on canine jealousy, could redefine the view that the complex emotion of envy is a human construct, said Christine Harris, University of California, San Diego psychologist and an author of the study.